Details are as follows:

The reinforced concrete pipe is directly inserted into the reserved hole of manhole mould, and then sealed with cement mortar. For plastic pipes with flat interfaces, such as PVCU flat-wall pipes, in order to enhance the connection effect between the pipes and manholes, it is necessary to roughen the outer wall of the pipes in advance, such as attaching adhesive and coarse sand to the outer wall of the pipes in advance, and then building the pipe ends into the shaft wall with cement mortar. For pipes with uneven outer walls, such as wound structure wall pipes and reinforced rib pipes, cast-in-place concrete is used for encapsulation.

Under the long-term action of ground load, the mold and pipeline of inspection well have uneven settlement, the stress near the joint between pipeline and well is too concentrated, and the pipeline breaks after it can bear a large bending moment.

Inner core inspection well mold